Select the wrong statement.

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Bacterial cell wall is made up of peptidoglycan.

Pili and fimbriae are mainly involved in motility of bacterial cells.

Cyanobacteria lack flagellated cells.

Mycoplasma is a wall-less microorganism.

answer is B.

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Detailed Solution

(2) is the wrong statement.
Pili and fimbriae of bacteria are adhering structures. Pili help in attaching to other bacterium during conjugation. Fimbriae help in attaching to surface of rocks and host tissues.
(1) Bacterial cell wall is made of peptidoglycan or mureins.
(3) Cyanobacteria or blue-green algae do not have any flagellated cells. They have thick gelatinous sheath around their cells or fi laments or colonies.
(4) The Mycoplasma are organisms that completely lack a cell wall.

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